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Conventional arthrography is the x-ray examination of a joint that uses a special form of x-ray called fluoroscopy or CT Scan and a contrast material containing iodine. Some arthrography examinations also use magnetic resonance imaging (MRI).

An x-ray (radiograph) is a noninvasive medical test that helps physicians diagnose and treat medical conditions. Imaging with x-rays involves exposing a part of the body to a small dose of ionizing radiation to produce pictures of the inside of the body. X-rays are the oldest and most frequently used form of medical imaging.

Fluoroscopy makes it possible to see internal organs in motion. When iodine is injected into the joint space, it coats the inner lining of the joint structures and appears bright white on an arthrogram, allowing the radiologist to assess the anatomy and function of the joint.

MR arthrography involves the injection of a contrast material into the joint, just like in conventional arthrography, except that the contrast material is different. As in conventional arthrography, the contrast material outlines the structures within the joint. This allows them to be evaluated by the radiologist to determine the anatomy of the joint.

MR imaging uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed pictures of organs, soft tissues, bone and virtually all other internal body structures. The images can then be examined on a computer monitor, printed or copied to CD. MRI does not use ionizing radiation (x-rays).

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What are some common uses of the procedure?

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Arthrographic images help physicians evaluate alterations in structure and function of a joint and help to determine the possible need for treatment, including surgery or joint replacement.

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The procedure is most often used to identify abnormalities within the: